diff --git a/src/lib/__snapshots__/create-config.test.ts.snap b/src/lib/__snapshots__/create-config.test.ts.snap
index 171c49c85f..61fba90499 100644
--- a/src/lib/__snapshots__/create-config.test.ts.snap
+++ b/src/lib/__snapshots__/create-config.test.ts.snap
@@ -144,7 +144,6 @@ exports[`should create default config 1`] = `
       "newEventSearch": false,
       "originMiddleware": false,
       "outdatedSdksBanner": false,
-      "parseProjectFromSession": false,
       "personalAccessTokensKillSwitch": false,
       "projectOverviewRefactorFeedback": false,
       "queryMissingTokens": false,
diff --git a/src/lib/db/client-applications-store.ts b/src/lib/db/client-applications-store.ts
index 54b1a96189..553e570700 100644
--- a/src/lib/db/client-applications-store.ts
+++ b/src/lib/db/client-applications-store.ts
@@ -436,28 +436,20 @@ export default class ClientApplicationsStore
     }
 
     private remapUsageRow = (input) => {
-        if (this.flagResolver.isEnabled('parseProjectFromSession')) {
-            if (!input.projects || input.projects.length === 0) {
-                return [
-                    {
-                        app_name: input.appName,
-                        project: '*',
-                        environment: input.environment || '*',
-                    },
-                ];
-            } else {
-                return input.projects.map((project) => ({
+        if (!input.projects || input.projects.length === 0) {
+            return [
+                {
                     app_name: input.appName,
-                    project: project,
+                    project: '*',
                     environment: input.environment || '*',
-                }));
-            }
+                },
+            ];
         } else {
-            return {
+            return input.projects.map((project) => ({
                 app_name: input.appName,
-                project: input.project || '*',
+                project: project,
                 environment: input.environment || '*',
-            };
+            }));
         }
     };
 }
diff --git a/src/lib/features/metrics/instance/register.ts b/src/lib/features/metrics/instance/register.ts
index d3150acc31..59af6f5872 100644
--- a/src/lib/features/metrics/instance/register.ts
+++ b/src/lib/features/metrics/instance/register.ts
@@ -86,27 +86,13 @@ export default class RegisterController extends Controller {
         return ['default'];
     }
 
-    private extractProjectFromRequest(
-        req: IAuthRequest<unknown, void, ClientApplicationSchema>,
-    ) {
-        const token = req.get('Authorisation') || req.headers.authorization;
-        if (token) {
-            return token.split(':')[0];
-        }
-        return 'default';
-    }
-
     async registerClientApplication(
         req: IAuthRequest<unknown, void, ClientApplicationSchema>,
         res: Response<void>,
     ): Promise<void> {
         const { body: data, ip: clientIp, user } = req;
         data.environment = this.resolveEnvironment(user, data);
-        if (this.flagResolver.isEnabled('parseProjectFromSession')) {
-            data.projects = this.resolveProject(user);
-        } else {
-            data.project = this.extractProjectFromRequest(req);
-        }
+        data.projects = this.resolveProject(user);
 
         await this.clientInstanceService.registerClient(data, clientIp);
         res.header('X-Unleash-Version', version).status(202).end();
diff --git a/src/lib/types/experimental.ts b/src/lib/types/experimental.ts
index 001d9249ce..6dea88c0ba 100644
--- a/src/lib/types/experimental.ts
+++ b/src/lib/types/experimental.ts
@@ -52,7 +52,6 @@ export type IFlagKey =
     | 'displayEdgeBanner'
     | 'disableShowContextFieldSelectionValues'
     | 'projectOverviewRefactorFeedback'
-    | 'parseProjectFromSession'
     | 'manyStrategiesPagination'
     | 'enableLegacyVariants'
     | 'navigationSidebar'
@@ -264,10 +263,6 @@ const flags: IFlags = {
         process.env.UNLEASH_EXPERIMENTAL_PROJECT_OVERVIEW_REFACTOR_FEEDBACK,
         false,
     ),
-    parseProjectFromSession: parseEnvVarBoolean(
-        process.env.UNLEASH_EXPERIMENTAL_PARSE_PROJECT_FROM_SESSION,
-        false,
-    ),
     manyStrategiesPagination: parseEnvVarBoolean(
         process.env.UNLEASH_EXPERIMENTAL_MANY_STRATEGIES_PAGINATION,
         false,
diff --git a/src/server-dev.ts b/src/server-dev.ts
index 3dccefc469..18419c8f48 100644
--- a/src/server-dev.ts
+++ b/src/server-dev.ts
@@ -48,7 +48,6 @@ process.nextTick(async () => {
                         outdatedSdksBanner: true,
                         disableShowContextFieldSelectionValues: false,
                         projectOverviewRefactorFeedback: true,
-                        parseProjectFromSession: true,
                         manyStrategiesPagination: true,
                         enableLegacyVariants: false,
                         commandBarUI: true,
diff --git a/src/test/e2e/api/admin/metrics.e2e.test.ts b/src/test/e2e/api/admin/metrics.e2e.test.ts
index cb6722a885..5ea5e61326 100644
--- a/src/test/e2e/api/admin/metrics.e2e.test.ts
+++ b/src/test/e2e/api/admin/metrics.e2e.test.ts
@@ -12,9 +12,7 @@ let db: ITestDb;
 beforeAll(async () => {
     db = await dbInit('metrics_serial', getLogger, {
         experimental: {
-            flags: {
-                parseProjectFromSession: true,
-            },
+            flags: {},
         },
     });
     app = await setupAppWithCustomConfig(
@@ -23,7 +21,6 @@ beforeAll(async () => {
             experimental: {
                 flags: {
                     strictSchemaValidation: true,
-                    parseProjectFromSession: true,
                 },
             },
         },